1.

( + ) She studies on every Saturday.

( - ) She doesn't study on every Saturday.

( ? ) Does she study on every Saturday ?
2. 
( + ) I usually have breakfast at 6.30.

( - ) I don't usually have breakfast at 6.30.

( ? ) Do you usually have breakfast at 6.30.

3.

( + ) My mother often teaches me English on Saturday evenings.

( - ) My mother doesn't often teach me English on Saturday evenings.

( ? ) Does your mother often teach you English on Saturday evenings ?
4. 

( + )  Mr Ba washes the dishes every day.

( - ) Mr. Ba doesn't wash the dishes every day.

( ? ) Does Mr. Ba wash the dishes every day ?
5. 

( + ) They have breakfast every morning.

(  - ) They don't have breakfast every morning.

( ? ) Do they have breakfast every morning ?

6. 

( + ) The dog is very lovely.

( - ) The dog is not very lovely.

( ? ) Is the dog very lovely ?

7. 

( + ) These flowers are beautiful

( - ) These flowers are not beautiful.

( ? ) Are these flowers beautiful ?
8. 

( + ) My father is tall.

( - ) My father isn't tall.

( ? ) Is your father tall ?